Sorry Joan, but I don't think you are correct this time.
See the definition of "Wealth Tax":
Wealth tax - Wikipedia, the free encyclopedia
Several countries (France, Switzerland, India) tax the accumulted net worth of an individual each year. Granted, it is not a huge tax percentage...seems to be around 1% or so. Still, this is a tax on money and assets that have already been taxed, not an effort to find tax evading people (that activity is already illegal and there would not be a need to "enact" anything to legally go after them).
I think the blog or article was saying, "Would the US ever go this route also?"